/**
 * #      剑指 Offer 44
 * 名称   数字序列中某一位的数字
 * 链接   https://leetcode-cn.com/problems/shu-zi-xu-lie-zhong-mou-yi-wei-de-shu-zi-lcof
 * 题解   [327](https://leetcode-cn.com/problems/shu-zi-xu-lie-zhong-mou-yi-wei-de-shu-zi-lcof/solution)
 * 通过率 40.4%
 * 难道   中等
 */

